This video shows how on existing DN Item set its GPS coordinates by selecting a location on the map.
Open DN Items or DN Items - Map
Open detail of DN Item or create a new one
If editing is not set, interacting with map doesn't change coordinates
Click on Edit
Clicking to map set the values: GPS latitude GPS longitude
Save Changes
If set GPS latitude & GPS longitude, no changes ar mate without saving
Distribution Network Item - Change Coordinates by Map in detail view